For s5p6818 to boot from USBBOOT.
Usage: s5p6818_usb_downloader <filepath>
Download firmware to s5p6818 via usb.
Mandatory arguments to long options are mandatory for short options too.
-h, --help display this help and exit
-v, --version output version information and exit
-t, --time timeout for search driver, default timeout is 10 second
-k, --kernel download kernel, default is u-boot whit nsih header